Herman jakobsson



(No Model.)-

H. JAKOBSSON.

CARRIAGE FOR ARTILLERY.

No. 539,944. Patented May 28, 1895.

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UNITED STATES PATENT OEETQE.

HERMAN JAKOBSSON, OF LONDON, ENGLAND.

CARRIAGE FOR ARTILLERY.

4 SPECIFICATION forming part of Letters Patent No. 539,944, dated May28, 1895.

Application filed May 9,

October 30, 1893,1lo. 233,735; in Belgium October 30. 189

1394- Sfififll .680. (ll'o model. Patentedin England October 27, 1893,No. 20,250; in France 3,110. 106,951,5ndin Italy November 16, 1893,1io.35,137.

To all whom it may concern.- I

Be it known that I, HERMAN J AKOBSSON, engineer, a subject of the Kingof Sweden and Norway, and a resident of London, England, have inventedcertain new and useful Improvements in Carriages or Mountings forArtillery, originally forming part of the application Serial No.490,982, filed on or about November 15, 1893, (for which I have obtainedpatents in Great Britain, No. 20,250, dated October 27, 1893; in France,No. 233,735, dated October 30, 1893; in Belgium, No. 106,951, datedOctober 30, 1893, and in Italy, No. 35,137, application date October 30,1893, issue date November 16, 1893,) of which the following is aspecification, reference being had to the accompanying drawings.

This invention relates to wheeled carriages or mountings for artilleryand is designed to increase the stability and durability of suchmountings and to facilitate the elevation and training of the gunsthereon. The gun is so attached to the axle that when turned forelevation the axle turns with it. The gun is moreover so mounted as notto be raised very much above the axis of the wheels, and it can behorizontally adjusted, for fine or accurate laying, independently of thecarriage.

Referring to the accompanying drawings, Figure 1 is a side elevation ofa portion of a gun mounted in accordance with this invention, themounting being shown in section. Fig. 2 is a vertical section of the gunand part of the mounting, taken in a plane containing the carriage-axle.Fig. 3 is a. plan of the eradle and part of the mounting, the gun beingremoved.

Ais the gun.

B is the cradle.

O is the axle.

D, D, are the wheels.

E is the trail.

The drawings show a recoil mounting provided with hydraulic recoilbrakes and a eradle in which the gun slides. The central part of theaxle is flattened, and the cradle is pivoted to the fiat part bya pin Bso that it can turn about said pin for horizontal laying or pointing,but must turn with the axle for elevation. G is acover plate passedunderneath the axle and bolted to the cradle by bolts 0 or otherwiseremovabl y secured thereto. The

axle extends through bearings E, E, attached by bolts, rivets orotherwise to the cheeks of the trail, said bearings being prevented fromendwise displacement on the axle by inner plates E E secured thereto,between which and the said bearings are inclosed collars O C formed onthe axle. Outside of these bearings are the wheels D which are fitted toturn freely upon the axle. It will be seen therefore that the ends ofthe axle serve as the trunnions, and the wheels as the trunnionbearings, about which the gun is turned for elevation.

For controlling the vertical turning movement of the gun and axle andfor training or turning the gun horizontally for fine or accuratelaying, without moving the trail of the carriage, provision is made asfollows, that is to say: F is a suitable frame or arm secured at itsforward end to the axis by bolts or otherwise, and entering at its rearend a guide G which is secured to the, gun cradle. The said guide G canmove laterally on the frame F as hereinafter described when the gun istrained for fine or accurate laying. The elevating gear comprises ascrew-threaded shaft ll pivoted by its upper end at H to the frame F andworking through a nut H supported by a tubular piece H trunnioned in thetrail sides. The said nut 1-1 can be rotated by a hand wheel H at theside of the trail acting through bevel gear wheels H The rear edge ofthe frame F is provided with a toothed segment F having the pin B as itscenter. With the said segment there engages a worm I the shaft of whichis carried in bearings formed on or at tached to the cradle. I is a handwheel for turning said worm. The worm is not capable of endwise movementrelatively to the eradle and hence when it is rotated and thereby causedto travel along the toothed segment, the cradle is carried with it andturns about the pivot pin 13 thus effecting the fine lateral pointing orlaying of the gun without moving the trail. The recess 13 in the cradlewhich is made sufficiently long to allow of the desired amount oflateral turning movement. It will be observed that the shock on. theelereceives the flattened portion of the axle is ICO over the cradlemight be attached below the axle instead of above it as shownf What Iclaim is- In a carriage ormounting for artilleryfthe combi nation withthe wheel hxle of a gun, and

its cradle said cradle being mounted on the axle and turning therewithfor elevati0n,but independently thereof for fine or accurate laying andmeans for etteeting the laying said means comprising an arm F secured atits forward end to the axle and guided at its rear end in a guide Gsecured to the cradle, a toothed Segment formed at said rear end,a wormcarried by the cradle and gearing with said toothed segment, and meansfor turning said u/Orm, substantially as described. In witness whereof Ihave hereunto set my hand this 27th day of March, 18%.

- HERMAN JAKOBSSON.

Vv'ituessesz l-tnrri-m. ALVT) BERGIN,

